[mpp] Add test: pre-hmpp dependencies not reported in test source sets

Test source sets do not participate in the metadata compilations by
default, so the check misses them. This commit just encodes this
behavior into tests, without actually addressing it

KT-60724

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/mpp/PreHmppDependenciesDeprecationIT.kt

@@ -71,9 +71,9 @@ class PreHmppDependenciesDeprecationIT : KGPBaseTest() {
     }
 
     @GradleTest
-    fun testNoWarningsInPlatformSpecificSourceSets(gradleVersion: GradleVersion, @TempDir tempDir: Path) {
+    fun testNoWarningsInPlatformSpecificSourceSetsOrTests(gradleVersion: GradleVersion, @TempDir tempDir: Path) {
         publishLibrary("preHmppLibrary", gradleVersion, tempDir)
-        checkDiagnostics(gradleVersion, "noWarningsInPlatformSpecificSourceSets", tempDir)
+        checkDiagnostics(gradleVersion, "noWarningsInPlatformSpecificSourceSetsOrTests", tempDir)
     }
 
     private fun checkDiagnostics(

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/preHmppDependenciesDeprecation/noWarningsInPlatformSpecificSourceSetsOrTests/build.gradle.kts

@@ -18,4 +18,9 @@ kotlin {
             implementation("org.jetbrains.kotlin.tests:preHmppLibrary:0.1")
         }
     }
+
+    // see KT-60724
+    sourceSets.getByName("commonTest").dependencies {
+        implementation("org.jetbrains.kotlin.tests:preHmppLibrary:0.1")
+    }
 }